The Claim
Individuals on a self-selected low-carbohydrate, high-fat diet have a significantly lower diet quality, as measured by the Healthy Eating Index 2015, compared to vegans, vegetarians, and omnivores, primarily due to lower intake of whole grains, fruits, and healthier fat ratios.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
People who choose to eat very little carbs and lots of fat tend to have worse eating habits than vegans, vegetarians, and regular meat-eaters—mainly because they eat fewer whole grains, fruits, and healthy fats.
See the scientific wording
The diet quality of individuals on a self-selected low-carbohydrate, high-fat diet, as measured by the Healthy Eating Index 2015, is significantly lower than that of vegans, vegetarians, and omnivores, primarily due to low intake of whole grains, fruits, and healthy fat ratios.
What the research says
1 studyStudy: Habitual low carbohydrate high fat diet compared with omnivorous, vegan, and vegetarian diets
The study found that people on low-carb, high-fat diets ate worse-quality food than vegans, vegetarians, and meat-eaters, especially because they ate fewer fruits and whole grains and more unhealthy fats — just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.